The article presents the results of studying the peculiarities of growth and fruiting of trees of sweet cherry with varying density. It is established that the average yield for the years of fruiting does not depend on tree planting schemes, and higher profitability of production is marked with the scheme of 5,0×3,0 5,0×2,5 m
The results of the research of the various agricultural technologies’ energetic efficiency are given in the article. The importance of the energy assessment for the technological process’ improvement and management of the agricultural projects is considered
The article reveals the issues concerning the results of the research of estimation of new early lines of maize with quick grain dry down in two areas of growing. The regression analysis which based on derived data identified intensive hybrids and the most sustainable hybrid combinations by yield and harvesting moisture of grain
The study of the productive qualities of crossbred
offspring from different breeding combinations and
identifying the most effective ones providing the
maximum increase in the production of high quality
lamb while reducing its cost is an important problem
and is essential for further development of methods of
creating a new type of precocious meat and wool
sheep. In the Rostov region in the result of the
establishment of populations of meat-wool sheep there
are several groups of animals with different
characteristics and hereditary inclinations. As the base
of the work there is a method of mating and breeding
of sheep of the desired type. The article presents the
results of one of the fragments of a large complex
work in which the possibility of using three-pedigree
hybrids, created with the involvement of potential
salskaya, edilbaevskaya and intense meat-wool breed,
which is severokavkazskaya, to improve productive
quality in the breeding of sheep. We have evaluated
productivity and biological features of hybrids and
proved the economic efficiency of their use in the
production of mutton. We have given the results of the
control slaughter and assessment of qualitative
indicators of the meat of young sheep. The set of
indicators characterizing meat productivity and meat
quality revealed that the superiority of the studied
indicators remained for two - and three-bred cross
cattle. Hybrids have a higher rate of growth and
quality parameters of meat productivity. These options
are simple and complex industrial crossing are
promising and can be implemented and used on the
farms of the zone of breeding Merino sheep. Thus, the
use of crossbreeding gives an opportunity to convert a
flock of sheep in the desired direction quickly. At the
same time, three-pedigree hybrids better combine the
valuable qualities of the used species
In order to ensure import substitution and threshold
values of meat production, it is necessary to stabilize
the livestock of animals and introduce intensive
technologies. In conditions of arid steppes, the animals
of Kalmyk, Hereford and Aberdeen-Angus breeds are
best suited to stall-pasture technology. Before weaning
from mothers at 7-8 months of age, their offspring is
grown without additional feeding, just mothers’ milk.
Therefore, the growth rate of suckling young animals
rarely exceeds 850 grams of daily growth, while the
live weight reaches 400-450 kilograms at the age of 18
months, with some advantage in favor of the young
generation of Hereford breed. Using the intensive 9-
months growing at the fattening complex with feeding
from the self-feeders ensured the average daily gain in
the Kalmyk bull-calves at the level of 1398 grams, and
for the Aberdeen-Angus and Hereford breeds the
growth is 1533 grams. The highest growth energy, live
weight (661 kilograms), was with Hereford bulls.
From bulls of the native Kalmyk breed with intensive
technology of growing, a heavy body weight increase
of 331 kilograms at 18 months of age was obtained.
All tested samples of meat according to
microbiological indicators comply with the
requirements of the Technical Regulations
The article presents the results of the research of the formation of hierarchical structure in a group of roosters while being in the close space of a cage. Stable hierarchical relationships in the group could only be formed with a certain amount of roosters included in it
The aim of work is to get prognostic equation, providing analytical description of height dependence on diameters by thickness of steps for forest stands of Krasnoyarsk forest-steppe.
The article presents the results of studying the impact of different options for cutting fruit vines on the growth and productivity of shoots of the grapes. The obtained experimental data indicate the excessive overload of vines with eyes and shoots when performing contour trimming bushes without normalizing the choice of shoots, in comparison with other variants of experience. A significant increase of eyes on the vines when performing contour cutting was because during this method of cutting, the cutoff is at a certain level all the shoots are horizontal on the arm vines. A big load of vines shoots when performing contour cutting has reduced the length of shoots at 48 – 51%, and leaf area developed on the shoots of 53 – 54%. While the lowest productivity was different shoots developed on the vines in 3 variant, because here the contour cutting vines was not accompanied by a subsequent breaking of superfluous shoots, which have overloaded the bushes shoots. At the same time, contour cutting vines with subsequent breaking of the normalizing excess shoots were allowed to grow for fruiting the bushes a sufficient amount of normally developed shoots with high productivity and good quality bunches
The extensive overview of the currently used herbicides antidotes of agricultural crops is reviewed in this article. The most important results are discussed and the technology of combined application is described
In the article the historical and social analysis of placement and specialization of agricultural production is provided in territorial borders of the subject